A Brownian particle having a fluctuating mass

Details A Brownian particle having a fluctuating mass A Brownian particle having a fluctuating mass

2005-08-31

arxiv.org/abs/cond-mat/0508773v2

Phys. Rev. E 73, 011105 (2006)

Physics

Condensed Matter

Statistical Mechanics

submitted to PRE

Scientific paper

10.1103/PhysRevE.73.011105

We focus on the dynamics of a Brownian particle whose mass fluctuates. First we show that the behaviour is similar to that of a Brownian particle moving in a fluctuating medium, as studied by Beck [Phys. Rev. Lett. 87 (2001) 180601]. By performing numerical simulations of the Langevin equation, we check the theoretical predictions derived in the adiabatic limit, and study deviations outside this limit. We compare the mass velocity distribution with truncated Tsallis distributions [J. Stat. Phys. 52 (1988) 479] and find excellent agreement if the masses are chi- squared distributed. We also consider the diffusion of the Brownian particle by studying a Bernoulli random walk with fluctuating walk length in one dimension. We observe the time dependence of the position distribution kurtosis and find interesting behaviours. We point out a few physical cases where the mass fluctuation problem could be encountered as a first approximation for agglomeration- fracture non equilibrium processes.

Affiliated with

Also associated with

No associations

Rating

A Brownian particle having a fluctuating mass does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A Brownian particle having a fluctuating mass, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Brownian particle having a fluctuating mass will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-116274